I've added an entry in the following tables:
wcf1_package (added package info here with id 999)
wcf1_language_to_packages: languageID 1, packageID 999
wcf1_language_item: k2_cms.global.copyright, packageID 999
wcf1_language_category: languageCategoryID 116, languageCategory k2_cms.global
Why did you that? Why didn't you create a proper wcf-package and installed it via admin panel?